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Component: (Network and Table)
Network
41103 - Disclosure - Income Taxes (Summary Of Temporary Differences That Give Rise To Deferred Tax Assets/ (Liabilities)) (Details)
(http://www.dvk.com/2010-09-30/role/DisclosureIncomeTaxesSummaryOfTemporaryDifferencesThatGiveRiseToDeferredTaxAssetsLiabilitiesDetails)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000019584 (http://www.sec.gov/CIK)
Income Taxes [Abstract]Period [Axis]
2016-12-31
2015-12-31
Income Taxes [Abstract]
 
 
Accrued liabilities
43,575,000  
39,529,000  
Stock compensation expense
9,309,000  
8,555,000  
Allowance for uncollectible accounts receivable
1,952,000  
1,729,000  
State net operating loss carryforwards
1,811,000  
1,701,000  
Other
776,000  
896,000  
Deferred income tax assets
57,423,000  
 
52,410,000  
 
Amortization of intangible assets
(52,133,000) 
(50,136,000) 
Accelerated tax depreciation
(14,975,000) 
(18,030,000) 
Current assets
(1,825,000) 
(1,576,000) 
Market valuation of investments
(1,341,000) 
(1,375,000) 
State income taxes
(793,000) 
(1,465,000) 
Other
(639,000) 
(857,000) 
Deferred income tax liabilities
(71,706,000) 
 
(73,439,000) 
 
Deferred income tax liabilities
(14,283,000) 
 
(21,029,000)